Trecker, Henleigh Bradley <br/><br/>
Social group work: principles and practices 
by Henleigh Bradley Trecker 
 - New York  Association Press  1972 
 - 350p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social group work
<br/><br/><label>Dewey Class. No.: </label>Q25 T713/72